Tread portion of an automobile tire



FIG. 1 is a perspective view of the tread portion of an automobile tireaccording to my design;

FIG. 2 is a front view thereof;

FIG. 3 is a plane view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a fragmentary enlarged view showing the details of the treadportion thereof;

FIG. 6 is an end view taken along line 6-6 in FIG. 5 thereof; and,

FIG. 7 is an end view taken along line 7-7 in FIG. 5 thereof.

Broken lines in the drawing figures are used to show portions of thetire that are not being claimed, and thus form no part of the claimeddesign.

CLAIM The ornamental design for a tread portion of an automobile tire,as shown and described.